TY - JOUR AU - Pal, D. AU - Bayley, E. AU - Magaji, S. AU - Boszczyk, B.M. DO - doi:10.1302/1358-992X.94BSUPP_X.Britspine2010-139 UR - https://doi.org/10.1302/1358-992X.94BSUPP_X.Britspine2010-139 TI - FREEHAND DETERMINATION OF TRAJECTORY ANGLE FOR CERVICAL LATERAL MASS SCREWS. HOW ACCURATE IS IT? T2 - Orthopaedic Proceedings VL - 94-B IS - SUPP_X PY - 2012 SP - 139 EP - 139 ER -